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-rw-r--r--lib/crypto/c_src/crypto.c27
1 files changed, 27 insertions, 0 deletions
diff --git a/lib/crypto/c_src/crypto.c b/lib/crypto/c_src/crypto.c
index 2c8fb445dd..cd375e6d50 100644
--- a/lib/crypto/c_src/crypto.c
+++ b/lib/crypto/c_src/crypto.c
@@ -231,6 +231,7 @@ static ERL_NIF_TERM hmac_update_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM
static ERL_NIF_TERM hmac_final_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
static ERL_NIF_TERM block_crypt_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
static ERL_NIF_TERM aes_cfb_8_crypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+static ERL_NIF_TERM aes_cfb_128_crypt_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
static ERL_NIF_TERM aes_ige_crypt_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
static ERL_NIF_TERM aes_ctr_encrypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
static ERL_NIF_TERM aes_ctr_stream_init(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
@@ -301,6 +302,7 @@ static ErlNifFunc nif_funcs[] = {
{"hmac_final_nif", 2, hmac_final_nif},
{"block_crypt_nif", 5, block_crypt_nif},
{"block_crypt_nif", 4, block_crypt_nif},
+ {"aes_cfb_128_crypt_nif", 4, aes_cfb_128_crypt_nif},
{"aes_ige_crypt_nif", 4, aes_ige_crypt_nif},
{"aes_ctr_encrypt", 3, aes_ctr_encrypt},
@@ -1483,6 +1485,31 @@ static ERL_NIF_TERM aes_cfb_8_crypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM
return ret;
}
+static ERL_NIF_TERM aes_cfb_128_crypt_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Key, IVec, Data, IsEncrypt) */
+ ErlNifBinary key, ivec, text;
+ AES_KEY aes_key;
+ unsigned char ivec_clone[16]; /* writable copy */
+ int new_ivlen = 0;
+ ERL_NIF_TERM ret;
+
+ if (!enif_inspect_iolist_as_binary(env, argv[0], &key)
+ || !(key.size == 16 || key.size == 24 || key.size == 32)
+ || !enif_inspect_binary(env, argv[1], &ivec) || ivec.size != 16
+ || !enif_inspect_iolist_as_binary(env, argv[2], &text)) {
+ return enif_make_badarg(env);
+ }
+
+ memcpy(ivec_clone, ivec.data, 16);
+ AES_set_encrypt_key(key.data, key.size * 8, &aes_key);
+ AES_cfb128_encrypt((unsigned char *) text.data,
+ enif_make_new_binary(env, text.size, &ret),
+ text.size, &aes_key, ivec_clone, &new_ivlen,
+ (argv[3] != atom_true));
+ CONSUME_REDS(env,text);
+ return ret;
+}
+
static ERL_NIF_TERM aes_ige_crypt_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{/* (Key, IVec, Data, IsEncrypt) */
#ifdef HAVE_AES_IGE